The ADT4-6+ from Mini Circuits is a Balun with Frequency 0.07 to 250 MHz, Amplitude Balance ± 1.27 dB, Phase Balance 0.03 to 30.05 Degree, Insertion Loss 0.22 to 0.80 dB, Current 30 mA. Tags: Surface Mount, Balanced to Balanced. More details for ADT4-6+ can be seen below.